Shō has a strained relationship with his daughter, after leaving her to the care of her grandfather to travel the world. However, he was shown to deeply care for his daughter, but have difficulty to demonstrate it, which he admits to. Mei has the habit of calling him "sensei" (teacher) instead of "father", which bothers him. Help from Yuzu their begin repairing their relationship.
Although Yuzu is initially surprised by his appearance, she quickly realizes he's a nice person  After Yuzu revealed her true feelings about Mei he full heatedly supports Yuzu's feeling towards Mei.
He has a good relationship with her, despite not usually being at home. She teases him for not being able to talk to his own daughter normally, and even calls him a Tsundere.